Iron and Stone mod for Knights of Honor

This is a mod emphasizing resource seizing. Two elemental resources, Iron and Stone.Only a few fortunate castles will have these two resources. With them, you can build chainmail and stonewall, as well as update your armory. Elite units like feudal knights, varangian, cataphract and so on, are restricted by the castle’s infrastructure – restricted by the castle’s natural resources.You lost the resources? You lost the war.

The mod also have some other minor tweaks, including culture restriction, expeditionary restriction, troop traits, and more.

This mod is completed. Coming soon.

In this mod, Iron and Stone are two elemental resources. They are randomly distributed among the whole map when a new campaign initialized, with exceptions: Famous castles/towns like London, Jerusalem, Constantinople, Rome, etc. will always own one or both resources.
Only the castle with Iron have the ability to build blacksmith; only the castle with stone have the ability to build stonewall. All troops with advanced armor (chainmail, scalemail and plate) need a blacksmith in the castle to recruit.

When you occupy your rival's realm, you can only recruit their local units. If you want to hold this land, you will have to transport your army from distant homeland.
Different realms have different units. Africans can't recruit Europe units, and vice versa.

Armor are divided into quilted, chainmail, scalemail and plate. Shield are also divided into 4 classes. All have fixed armor value.
Adjust ranged weapon bonus: Arrows are efficient versus quilted armor, while bolts and gun shots are fairly efficient against chainmail and even plate.
Renamed "spearman" into "pikeman", and added a stronger version of pikeman named "halberdier". They can withstand the cavalry, but don't expect them to hold long under ranged fire.
Added specific bonus on axe, double-hand sword, gun, pike troops.
Added individual melee defend and range defend value.

Some famous castles/towns have their own special buildings, such as Hagia, Piazza San Marco, Sanctum Sepulchrum, Stonehenge, etc. These builds also have an economy bonus.

And some minor tweaks:
Royal members will get more benefit from being governor, butif you ask him back to court, you need to pay 300 gold and it takes more time.
A king with better financial ability will contribute more gold to the vault. It is more obvious when you own more castles.
General upgrade is harder and slower.
Kingdom advantage is halved (comparing with vanilla).
Food supply is no longer free.
... and many other tweaks waiting for you to explore yourself.

If you know Chinese, you can also download this mod from Tieba.baidu.com
Thanks.

Credit: (in no particular order)
MarcosP_BR, for gunner troops from his "Musket of Honor"
feillyne, for some nice icons from his "Dusk of Glory"
Aflyhorse, for helping